Heating Mode - Electra PXD912 Service Manual

CONTROL SYSTEM
11.5

Heating Mode

11.5.1 Heating Mode - General
a. Compensation Procedure
When I-FEEL is OFF during HEAT mode: RT= RAT – CTV.
When I-FEEL is ON during HEAT mode: RT= RCT.
No compensation will be activated in Forced operation modes
b. IFAN operation rules for RC and SH groups:
1) As a general rule for RC and SH groups, IFAN will be switched ON according
to the following graph:
IFAN
ANY
LOW
OFF
General:
Window:
When COMP is ON (except WAX Model), IFAN will change from
LOW to OFF either when:
a) ICT<28 and IFAN is on for 5 min or longer.
b) ICT<20
When ICT is faulty:
When the compressor switches from OFF to ON (excluding
deicing), IFAN will be on in ANY speed.
When the compressor switches from ON to OFF, the IFAN will
change to LOW speed for 30 seconds and then it will be off.
2) In SH or RC group, IFAN will operate for Min 30 sec according to 1) above
after HEs are turned off, where in a case it has to be OFF, it will be forced to
LOW speed.
11-12
Type of Indoor
Wall Mounted
Mobiles / Floor Ceiling
Square /Window
Ducted
Cassettes
Note 1
Ducted
30 32
17 20
Or,
CONTENT
CTV
o
+3 C
o
+0 C
o
+2 C
o
+4 C
o
+4 C
40
ICT
25
NOTE 1
NOTE 2
SM PXD 1-E.3 GB